Bicycle.



No. 709,679. I Patented Sept. 23, I902.

c. H. OCUMPAUGH.

BICYCLE.

{Application filed Apr. 29, 1898.)

(No Model.)

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UNITED STATES PATENT FFICE.

CHARLES HERBERT OGUMPAUGH, OF ROCHESTER, NEW YORK.

BICYCLE.

SPECIFICATION forming part of Letters Patent No. 709,679, dated September 23, 1902.

Application filed April 29, 1898. Serial No. 679,184. (No model.)

To all whom it may concern:

Be it known that I, CHARLES HERBERT OCUMPAUGH, a resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Bicycles; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

The invention relates to chainless sid e-shaft bicycles, and has for its object to provide simple, durable, and certainly-operating means for transmission of power from the crankshaft to the wheelhul).

The invention consists in the construction hereinafter described and pointed out.

In the accompanying drawings, Figure 1 is a partial plan of a bicycle with the improvement. Fig. 2 is a plan of agear. Fig. 3 is a section of the same. Fig. 4 is a broken plan of a modification. Fig. 5 is a section of a modified detail.

Numeral 1 denotes the crank-shaft of a bi cycle supported in hearings or hangers 2 and 3 at the foot of the frame fork members 4, the latter being represented in the drawings as broken away. To the crankshaft, between the bearings 2 and 3, is fixed a geanwheel, which comprises a cup-like case 5, consisting of a flanged disk. To this is fixed a central sleeve 6, which is also fixed on the shaft.

7 denotes rollers, having their ends journaled, respectively, in the sleeve 6 and in the rim or outer flange 6 of the case 5. These preferably run upon antifriction-balls, as indicated.

8 denotes a wheel provided with pin-rollers 9, extending radially from its periphery and fixed 'upon a shaft 10. The pins 9 have ballbearings and mesh with the rollers 7 within the cup or wheel 5. In some cases the pins may be fixed in their wheel, or in another case a spur-gear or other form of gear may be substituted for wheel 8 and its pin-rollers.

In Fig. 5 is indicated a cup-formed wheel 8, provided with peripheral pins or gear-teeth having ball-bearings and of a character suitable to mesh with the rollers of a cup-shaped wheel 5.

The opposite end of shaft 10 is provided with a similar Wheel 8, with radially-disposed peripheral pin-rollers arranged to mesh with the rollers of a cup or wheel 11, which is similar to wheel 5. This wheel 11 is fixed to the main-wheel hub 12.

The shaft 10 may be inclosed in a frametube and the wheels cased, as represented;

but this is not essential.

A modified form of the cupshaped wheel is indicated in Figs. 4 and 5, in which 13 denotes a wheel having a web or diaphragm 14 and exterior flanges 6' and interior sleeves 6 fixed on the shaft and combined with two pinroller Wheels and with suitable shafts. The said pin-rollers mesh with roller? of the wheel 13, having their opposite ends journaled in the sleeves and flanges, respectively.

The main or body parts of the Wheels 8 are made sufliciently thick to permitthe provision of ball-bearings and to possess sufficient strength. The cup-shaped wheels are rendered strong by their disk-like form provided with an outer flange, and particularly in the case of a cup-shaped wheel having an inner sleeve, these parts providing strong and convenient support for the rollers without great thickness of metal.

It is not essential that wheel 5 and wheel 8 be used precisely as shown, and it is obvious that their relative situations, one on a side shaft and the other on a wheel-hub or pedalshaft, may be reversed.

The combination of the specified forms of wheel and rollers renders it easy to insure a secure and certainly-operating mesh not liable to be seriously affected by wear or by slight distortion of the frame or of the gear connections, and the construction provides for a wide variation of the angle of the side shaft to the crank-shaft and to the hub-axis or a like variation of the angle of analogous parts when the gears are employed in other machines.

Havingdescribed my invention, I claim mesh with the rollers of the cup-Wheel, sub- 10 In a, bicycle, the combination of a pedalstantially as described. shaft, the cup-shaped Wheel having an inte- In testimony whereof I have signed this rior sleeve fixed to the shaft and a concentric I specification in the presence of two subscribrim, rollersjournaled torevolve wholly Within 1 ing Witnesses.

the'cup-shaped depression of the wheel near i CHARLES HER-BERT OCUMPAUGH.

Witnesses:

J. P. OCUMPAUGH,

KATHERINE THORNTON.

its mouth, the ends of the rollers being mounted in the sleeve and rim, and a disk-shaped Wheel having radially-arranged pin-rollers to 

